LT5751B - Vertical axis wind turbine - Google Patents

Abstract

Vertical axis wind turbine relates to wind motors with rotation axis substantially at right angle to wind. Wind power plant has wings set on the vertical axis of the wind turbine. Its impeller is placed in a cube-shaped frame, in its four sides are set vertical blinds rotated in an angle to cube-shaped frame bottom side. There is a space between each of the wings and adjacent wing. Impeller can be made of three or more wings.

Description

Technical field

A vertical axis wind turbine is assigned to windmills with a rotational axis perpendicular to the wind direction.

State of the art

The principle of vertical axis wind turbines, where the wind flow is directed directly to the beneficial side of the spam, is described in W0030580, EP1398500, JP2003042055. This way the air flow is not stopped. However, airflow only reaches a portion of the spam surface, which reduces the payload. It also decreases because the wind acts on both sides of the spam simultaneously, reducing the coefficient of performance of the spam by wind power acting on the opposite side of the spam, and the great disadvantage of such a design is that it has to be adjusted according to the wind direction. reduces the efficiency of the power plant and complicates the overall design.

The closest analogue is described in European Patent 1540176 A2, a vertical axis wind turbine with wind deflector plates. The panels are arranged in a circle, which also gives a significant increase in efficiency.

However, circular panels have the following disadvantages:

1. Wind flow to the beneficial side of the spamming is suspended because the circular plates are rotated at an equal angle, which prevents the wind from directly entering the useful side of the spamming. In addition, the effect of the wind on the opposite side of the spamming is not completely stopped while at the same time losing part of the useful performance factor.

2. The amount of useful wind flow is about 15% less. The circular deflector design directs less air mass into the same size spam than the square deflector.

3. Complex design.

The essence of the invention

The essence of the present invention is that, in order to increase the efficiency of the wind turbine, the impeller of the wind turbine is mounted in a cube-shaped housing having vertical blinds at different angles in each of the four sidewalls. Blinds are positioned at angles such that all wind energy is directed to the required side of the spam, while the opposite side of the spam will have a minimal amount of wind energy.

The shutters are mounted on all four sides, so the operation of the spam is independent of the wind direction. Installing the spamming in the housing described above with the wind deflecting segments increases the spamming speed by 25% -30% while increasing the efficiency of the vertical axis wind turbine.

The rotating part of the power plant - impeller is also specially designed. For optimum use of airflow force, there is a gap between each of the wings and the adjacent wing, which allows airflow to be directed to the entire surface of the adjacent wing.

The wing has three wings, which are located at 120 degrees, the wind is not stopped in the wing, and when the wing slides, it is directed to the next wing, thus making better use of wind energy.

The impeller consists of outer and inner segments. Segment riveting or otherwise fastening spam wings.

The impeller is mounted in a height described housing with wind deflection blinds.

Brief description of the drawing figures

FIG. 1 is a general view of the spamming a) an axonometric projection and b) a top view; FIG. 2 is a general view of the spam with a frame, (a) an axonometric projection and

(b) top view; FIG. 3 - air flow deflector panel with blinds a) top view and b) side view; FIG. 4 is a general view of the power plant with shutters, a) axonometric projection, and b) top view; FIG. 5 is a side view of the power plant and b) an axonometric projection; FIG. 6 - 4-wing power plant a) axonometric projection and b) top view.

Implementation of the invention

A wind turbine with wings disposed on a vertical axis, the wind turbine being housed in a cube-shaped frame with vertical blinds tilted 85 ° -105 °, 110 ° -130 °, 125 ° -145 °, 135 ° respectively on the four lateral sides -155 ° and 150 ° -170 ° in relation to the lower edge of the cube frame. In addition, there is a gap between each of the wings and the adjacent wing, which allows airflow to be directed to the entire surface of the adjacent wing, which allows for optimal distribution of airflow. Each wing of the wing has a radius of 0.75 to 1.2 L (distance from the tip of the wing to the axis of rotation of the wing), a wing length of 0.8 to 1.1 L, and the distance from the tip of the wing to the start of the adjacent wing segment 1.2 to 1.4 L. The impeller can consist of three or more wings, in which case the radius of curvature of the wing in the four-wing spam is 1.2 to 1.5 L.

This vertical axis wind turbine with wind shutters has a very high efficiency, the impeller starts to rotate from 1-2 m / s wind speed. The optimum power of the generator is achieved from a wind speed of 5 m / s, the power of the generator depends on the size of the spam. It is also possible to use multiple spamming and one power generator. For this purpose, it is possible to fasten the shells with spam on one another vertically, and the axes of the impellers to be connected by couplings.

It can be used where you need to get electricity without connecting to any power grid. The invention can also be used in the major cities of Lithuania, Vilnius and the Village, the suburbs of which are located in high places and Klaipėda, which is located by the sea.

Claims (5)

1. Vertical axis wind turbine with wings disposed on a vertical axis, characterized in that the wind turbine impeller is housed in a cube-shaped frame with vertical blinds tilted 85 ° -105 °, 110 ° -130 °, 125 on the four lateral sides, respectively. ° –145 °, 135 ° –155 °, and 150 ° –170 ° for the lower edge of the cube-shaped frame. 2. A wind turbine according to claim 1, characterized in that there is a gap between each of the wings and the adjacent wing for directing the air flow to the entire surface of the adjacent wing, which allows an optimal distribution of the air flows. 3. A wind turbine according to claim 1, 2, characterized in that each wing of the spam has a radius of 0.75 to 1.2 L, a wing length of 0.8 to 1.1 L and a distance from the tip of the wing to the adjacent wing. the beginning of the segment is 1.2 to 1.4 L. 4. Wind turbine according to claims 1-3, characterized in that the impeller can consist of three or more wings. 5. Wind turbine according to. 4, characterized in that the radius of curvature of the wing in the four-wing spam is 1.2 to 1.5 L.